Carvalho, T., C. Haddad, and M. Gridi-Papp. “Tonal Calls As a Bioacoustic Novelty in Two Atlantic Forest Species of Physalaemus (Anura: Leptodactylidae)”. Acta Herpetologica, vol. 14, no. 1, June 2019, pp. 21-26, doi:10.13128/Acta_Herpetol-23871.